Update CHANGELOG for `v3.0.0-beta2`. (#1058)

Update version number for 2.10.1. (#1068)

Prepare v3.0.0-beta1. (#1027)

Update CHANGELOG and version number for pre-release `3.0.0-beta1`.

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Co-authored-by: Luc Grosheintz <luc.grosheintz@gmail.com>
Co-authored-by: Matthias Wolf <matthias.wolf@epfl.ch>

Prepare v2.10.0. (#1037)

* Update CHANGELOG.md

* Update version numbers to 2.10.0.

Prepare `v2.9.0`. (#924)

Version 2.8.0 (#836)

Co-authored-by: Luc Grosheintz <luc.grosheintz@gmail.com>

Prepare version 2.7.1. (#712)

Prepare v2.7.0 (#696)

Update the change log and version number.

Prepare to release fixed build instructions. (#645)

Fix version in `CMakeLists.txt`. (#642)